Level.



C. OLSON.

LEVEL. APPLICATION FILED FEB. 11, 1911.

Patented June 13, 1911.

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CHARLS OLSON, OF GRAND RAPIDS, MICHIGAN.

LEVEL.

Specification of Letters Patent. Patented June 13, 1911, Application led February 11, 1911. Serial No. 608,031.

T o all whom it may concern:

Be it known that I, CHARLES OLsoN, a citizen of the United States of America, re-

o and at opposite sides of its axis. Openings are bored wholly through the bosses and ring and closed by stucco as at 7L after of this tube are inserted in'inwardly proenlargement being also radially divided, an jecting bosses 7 on the interior of the ring expanding screw in said .enlargemenu and siding at Grand Rapids, in the county of the tube 4 is inserted therein. Connect-ing 60 Kent and State of Michigan, have invented these bosses is a rib 8 in one side of the ring certain new and useful Improvements in and holding them rigidly in alinement, and Levels; and I do hereby declare the follow in the other side of the ring is an inwardly ing to be a full, clear, and exact description projecting enlargement 5a. This ring is diof the invention, such as will enable others vided through this enlargement and down skilled in the art to which it appertains to to near the sockets in a plane at right angles make and use the same. to its axis as at 12, and one portion again My invention relates to an improved level divided radially through the axis of the and its object is to provide the same with enlargement as at 13 and in this enlargeadjustable tubes, to provide detachable tubement is inserted an expanding screw 6, holding means which can be readily remove threaded into the undivided portion and `and replaced, to provide dust-proof inclohaving a conical head within the radially sures for the tube-holders and to provide divided portion to expand the same and thus the device with various new and useful feasecurely hold the ring in its adjusted positures hereinafter more fully described and tion within the transverse opening of the particularly pointed out in the claims referboss 3. This ring is of less dimension in the ence being had to the accompanying drawdirection of its axis than the opening of the ings, in WhCh;- boss and is located centrally therein, leav- Figure 1 is a side elevation of a device emlng space to insert watch glasses 9 which bodying my invention; Fig. 2 an enlarged glasses are secured in place by rings 10 80 detail in elevation; Fig. 3 a vertical secpressed into the ends of the opening in the tion on the line 3f?) of Fig. 2; Fig. 4 a plan boss. This ring 10 can be removed by inview partially in horizontal section on the serting a sharp instrument in a nick 11 in line L1& 4 of Fig. 2; Fig. 5 a perspective dethe outer end of the boss (see Fig. 2). I tail of the tube-holder detached; Fig. 6 an am thus able at pleasure to remove and re- 85 elevation of one end of the device sho-wing place any one of these rings holding a tube means for supporting the same within a and am also able to accurately adjust the case or chest; and Fig. 7 a plan of the same same within the opening of the boss and sewith portions broken away. cure the same when adjusted, and by means Like numbers refer to like parts in all of the watch glasses the device is fully proof the figures, tected from dust or dirt and also from any The body of the device is preferably made breakage or injury. of aluminum having an inner web portion The whole structure also presents a neat 1 provided near each end with horizontally workmanlike appearance and is light, duextended openings 1a to receive any suitable rable, and not likely to get out of order. 95 means for securing the device in place in a To support this device in a case or other case, chest or other receptacle as illustrated receptacle a pair of supports 14 may be proin Figs. 6 and 7. vided adapted to project through the open- 2 is a marginal flange extending continuings 1a and havingon their ends buttons 15 ously around the outside of the web and of adapted to pass through said openings and any convenient width or face on its exterturn transversely of the same and hold the nal surface. At intervals in the web and` device upon the supports 14 as illustrated in extending across from flange to flange at the Figs. 6 and 7. opposite sides of the same are circular bosses What I claim is A 3 surrounding transverse openings through 1. A level, comprising a body having a 105 the web. Within each of these openings is circular transverse opening, a ring to lit the fitted a ring 5 adapted to be secured therein, opening, said ring having an enlargement said ring carrying a glass tube 4 in which at one side and being partially divided is the ordinary liquid and air bubble to inthrough said enlargement and in a plane dicate the position of the level. The ends at right angles to its axis, one part of the 11 vided through one part of the enlargement, kand a screw having a conical head in the radial division and threaded into the other part of the enlargement.

In testimony whereof I afHX in presence of two witnesses.

CHARLES OLSON.

a glass tube extending across said ring and containing a liquid and a bubble.

2. A level, comprising a body having a circular transverse opening, a ring in said opening having inwardly projecting bosses at` opposite sides, a glass tube mounted in said bosses, a web in one side of the ring rigidly connecting the bosses7 an inward enlargement in the opposite side of the ring, said ring being partially divided in a plane at right angles to its axis and radially di- E Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

l 5 my signature Witnesses:

PALMER A. JONES, LUTHER V. MoULToN. 

